After many searches, I didn’t find the suitable solution in my opinion.
As I’m a beginner in demotic, I’m looking for advices about the best solution.
I want to integrate a PIR Motion Sensor to the HA system, I want to use Zigbee as much as possible and use batteries as less as possible.
(So if possible, I don’t want to use Xiaomi Aqara, or Philips Hue Motion Sensor)
A “230V powered PIR Motion Sensor that communicate its state using zigbee” would be the ideal product, I didn’t find such product on internet.
I chose Zigbee to equip a new-built home (a bit controversial, but it is cheaper than wired domotics and actually much more flexible!).
My solution for motion sensors is the classic 230V motion sensors, combined with a relay module the way you describe. I used Luxomat PIR sensor and Ubisys S2 relay module.
If you want to move to a more integrated device and you are comfortable with high voltage tinkering (soldering) you may consider